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thanks all, i found a us pat # 4024841 which is the one i remember, does any one know if this design would be efficient, seems to have a lot of moving parts

thanks ccycle, iv found something similar to what i remember it is pat # 5336067 thanks again

sorry i ment sphere shaped (ball) with 1 out put shaft sticking out

it was definatly a shere (new design) not a wankel, im sure it was on this site that someone had posted a link (few years ago now)

just a quick question i hope some one can answer, a few years ago i came across a drawing of an internal combustion engine that was shaped like a shere with an out put shaft and internal vanes (that created the compression) it was also had variable compression properties, can anyone direct me to...